Machine Learning on a Robotic Platform for the Design of Polymer-Protein Hybrids

6/11/2022 | Adam Gormley, Michael Webb

Polymer–protein hybrids are intriguing materials that can bolster protein stability in non-native environments, thereby enhancing their utility in diverse medicinal, commercial, and industrial applications

Nitride Semiconductor’s Family Expanded

5/16/2022 | K. Kash, H. Zhao, W. Lambrecht

The group III-nitrides (Al,Ga,In)N form the basis for the white LED lighting revolution, honored with the Nobel Prize in Physics in 2014.

Room-temperature Superfluorescence in Hybrid Perovskites

3/31/2022 | F. So, K. Gundogdu (NC State U.)

Semiconducting perovskites that exhibit superfluorescence at room temperature do so through built-in thermal “shock absorbers” which protect dipoles within the material from thermal interference.

Machine-assisted Discovery of Polymer-enzyme Complexes for Sustained Neural Regeneration

3/18/2022 | Adam Gormley and Michael Webb (Rutgers University)

Among the many molecules that contribute to glial scarring, chondroitin sulfate proteoglycans (CSPGs) are known to be potent inhibitors of neuronal regeneration. Chondroitinase ABC (ChABC) degrades the glycosaminoglycan (GAG) side chains of CSPGs and promotes tissue regeneration. However, ChABC is thermally unstable and loses all activity within a few hours at 37 °C.

Theory-guided Discovery of New Two-dimensional Metal-Chalcogenide Alloys with Exceptional Electrocatalytic Activity

1/1/2022 | Amin Salehi Khojin and Robert Klie (University of Illinois Chicago) and Rohan Mishra (Washington University)

We report the synthesis of new two-dimensional binary alloys of transition-metal dichalcogenides. Some of these alloys show outstanding performance as electrocatalyst in Li-air batteries and for the reduction of CO2.

Excitonic Effects at the Direct Bandgap of Germanium

1/1/2022 | J. Menéndez, Arizona State University

The divergence of the indirect absorption leads to the paradoxical conclusion that in the immediate vicinity of the direct gap, indirect absorption could become stronger than direct absorption. Eliminating this inconsistency requires a new theory of indirect absorption, which is one of the primary goals of this DMREF project.

Ultra-low Temperature Synthesis of Ge-based Optical Materials and Devices on Si using GeH3Cl

1/1/2022 | J. Menéndez, J. Kouvetakis (Arizona State University)

To demonstrate the quality of the Ge layers grown via the chlorogermane route, we fabricated pin diodes and measured their I-V characteristics and optical responsivity and found them to be comparable or better to those obtained with alternative low-temperature precursors. This bodes well for the use of chlorogermane in industrial efforts to integrate Ge functionalities with silicon CMOS.

An AI-driven Workflow for Accelerated Morphology, Electronic Structure, and Phase Characterization

1/1/2022 | Sarbajit Banerjee, Texas A&M University

We have devised a workflow for deep learning of feature dimensions across electron microscopy, X-ray microscopy, and X-ray ptychography data.

New Topology & Tunable Superconductivity in a-Bi4I4

11/16/2021 | R.J. Birgeneau (Berkeley), C. N. Lau (Ohio St.),B. Lv, F. Zhang (UT-Dallas), M. Yi (Rice)

Given that 𝜷-Bi4I4 is the first weak topological insulator (TI) (identified by us, but not shown here), that 𝜶-Bi4I4 is a prototype higher-order TI (highlighted here), and that there is a room-temperature transition between the two structural phases (also identified by us, but not shown here), we have established a new (quasi-1D) TI paradigm that unifies the first and second order topological insulators.

Enhanced Room Temperature Infrared LEDs

11/12/2021

Plasmonic-enhanced emission has been moved toward practical application by the demonstration of an electrically pumped light emitting diode (LED) whose emission properties far exceed state-of-the-art.

Research Highlights